Automatic core cutter and laying-up machine



March 20, 1928.

H. L.. BRANDAU AUTOMATIC CORE CUTTER AND LAYING-UP MACHINE Filed Aug. 29, 1927 4 Sheets-Sheet) .4 '17 RNEBS March 20, 1928.

H. L. BRANDAU AUTOMATIC CORE CUTTER AND LAYING-UP MACHINE Filed Aug. 29, 1927 4 Sheets-Sheet 2 wm a..

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March zo, 192s. 1,663,535

H. L. BRANDAU AUTOMATIC CORE CUTTER ND LAYING-UP MACHINE INVENTOR.

www L. @wlw Wyk?? 1,663,535 H. L. BRANDAU Filed Auz. 29, 1927 4 Sheets-Sheet 4 INVENTOR.

' AUTOMATIC CORE CUTTER AND LAYING-UP MACHINE March 20, 1928.

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Patented Mar. 20, 1928.

UNITED; STATES PATENT/ OFFICE. y

HAROLD L. BRANDAU, OF MUSOATINE, IOWA, ASSIGNOR TO MANUFACTURING CO., 0F MUSCATINE, IOWA, A CORPORATION VOF IOWA.

AUTOMATIC CORE CUTTER AND LAYING-UP MACHINE.

Applicationy med August 29, i927'. i serial: No. 216,08e.

This invention is avnovel automatic core cutter and vlay-up machine particularly adapted for use in making and gluing the cores for the stiles, rails andother relatively thick parts for veneer-ed which cores are'later planc'd veneer applied. M

In veneered doors the Stiles, top rails, middle rails, muntins, andVv bottom rai-ls are allmade upon Va core, consisting of rows of pine or otherjinexplensive blocks of various shortlengths, gluedtogether, the number yof rows of blocks varying accordmgtothe width of thedesired rail or stile vand theV length of each row conforming with the length of the desired rail or Stile. In order tooive a finished appearance kon the outer edges ofthe rail or. stile an edge stripis used of the y saniekind of wood as the veneered face of the door which strip forms a part of the core. v.

My novelmachine is designed to increase production n Stiles, and the like more economically, the short length pine blocks being alignment under a glue roller on a regular Vstock glue lspreader .and into lthe end of a tiltable trough located on the'front of the machine. The blocks travel into the trough until reaching the extreme end of the trough,

when they strike against a trip which auto-V matically swingsV the entire row of glued blocks and transfers thek row onto a core.

board located upon the top of the machine. An automatic cross-cut saw at the inlet end of the trough is so timed as to cut oft1 any portion. of the row of. block-s thatmay overhang the inner end of trough just before the trough is tilted.

This operation is continued until enough rows of block have been spread with glue and transferred to thecore board on the top of themachine to make a rail of the desired width. The entire rail is then conveyed to trate ene practical embodiment thereof toi and .produce cores for such rails,V

fed in axial Venable others familiar with the art to adoptV and use the same; and I` will summarize in theclaims thenovel features of construcf, f tion, and` novel combinations of parts, for doors and the like,

to size and the which protection is desired.

In said drawings: y :Figurefl is a side elevation of the machine,` partly broken away; Fig. 2 is a top planiview thereof; i Fig. 3 is an end View thereof;y y.Fig 4; is a. View showing the relation of the Vsaw operating cam and the trough rais# ingmechanism; c Y

Figf is aside view ofthe device for applying glue to the upper faces of the core blocks` as same are fed into the trough;

Fig. 'isan enlarged section through the core .boardshowing a plurality of door stile cores thereon; and showing in full lines the core `trough in raised position; and the same in normal loweredposition in dotted lines; Figs. 7,8, and 9 areaenlarged detail views of the cam shaftclutch operating means;

Figi() is asmall view of aveneered door; c Fig. l1 ,is an enlarged section on the line llffll, Fig. l0. c Y

As shownin Figs. ,1i-,3' inclusive the machine preferably comprises a rectangular frame consisting of four ,corner uprights l,

by means of beams le, l, 1g, and l?. Beside and spaced from upright la and exterior to thewframe isa post ,P which rigidly con-V nected at itsy lower end with thelower of uprights l@ ld by, anangle iron 1k. Er;- tending betweenuprights l and 1b adjacent their lower ends isa beam'lf; and connecting uprigh'ts 1aand l? adjacenttheir upper ends is a beam 1; and connecting uprights lc andY ld is a beam l? disposed Vat the saine height asbeam im. Between the uprights l" 1, but adjacent the upright lC a post 1g extending from the floor to the side `beam l to whichit is 'rigidly attached. The frame may be `further strengthened with other braces and beams, if desired. said frame carrying the power devices as hereinafter setk forth. ,y y Extendingffrom the opposite end of the frame from post l is a table portion of dev sired length disposed at the same heightfas beam 1g, saidtable comprising outer corner upright-s 2% 2b connected at their upper ends ends by beam 2'? andattheir lower ends by beam.

2d. The upper ends of uprights 2a 2b are respectively connected to the main frame uprights 1d 1c by side beams 2e 2f. A brace board 2g extends between the beams 1p and 2d. 'Upon the top -of the table and frame 1s a removable core board 3 v (.Figs. .2 and 6) mounted upon rests 3a (Fig. 6) said core board being adaptedvto receive the rowsof glued core blocks A which make up the core (Fig. 11) of the door stile.

Mounted upon the top of the frame and table at one side thereof is a trough rest 4, extending between the uprights la and 2a, Said rest t being adapted to support the trough 6, hereinafter described, when same is in normal lowered position as shown in Fig. 3 and in dotted lines in F ig.'6.

Extending beside and parallel with trough rest 4 is a rocker shaft 5 journalled in suitable bearings 5a upon the top of the table and frame. Shaft 5 carries a plurality of curved arms 5b (Fig. 6) supporting at'thelr outer ends a core block trough 6, preferably consisting of an angle-iron which when innormal lowered position lies upon the trough rest 1las shown in dotted lines in Fig. 6, but when the shaft 5 is rocked as hereinafter described trough 6 is raised into vertical position, as shown in full lines in Fig..6, the inner edge of trough -6 overlying the core board 3 to deposit the rowvof core blocks A upon said core board, such action being permitted by the curvature of arms 5b.

Between upright 1:l and post 1j is a rocking frame consisting of parallel members 7, 7 b, journalled in bearings 7 c upon acommon shaft 7 l which shaft is yjournalled in bearings 7e attached to the sides of upright `Pand post 15. The shaft 7 f of saw 7 is journalled in bearings 7g adjacent the outer ends o'f members 71,7b and is disposed at substantially thesame height-and adjacent the inner end of trough 6 but normally out of alignnient therewith as shown in full lines in Fig. 3 so that the core blocks A maybe normally fed` into the trough, but when the sawv frame is rocked as shown in dotted lines in Fig. 3 saw 7 will cut off the overhanging ends of the block A just prior to the transfer of the row of blocks A to the core board 3.

Journalled in bearings 821 upon vthe beams 1m 1I and below and parallel with trough 6 is a power shaft 3 havinga vlarge pulley 8" fixed thereon which is continuously driven by a belt 8c from a suitable 7prime .mover P. Shaft. 8 extends beyond the end ofthe 'frame and has fixed on its outer end a second large pulley Sd below a small pulley 7k on the saw shaft 7 f, and a belt 8e runs around pulleys 8d and 7k to constantly rotate the saw shaft at highspeed.

At the other side of the frame is a cam shaft 9 journalled inbearings 9a on the side of upright lb and post 1g .at about the height of beam 1, said shaft extending beyond the upright and post. Loosely mounted upon the shaft 9 is a large pulley '9b constantly driven by a belt 9C running over said pulley and 'a small pulley 8f fixer upon the power shaft-3. Shaft 9, upon-each'rotation as hereinafter explained when actuated by a trip device rocks the frame of saw 7 and trough, shaft 5. Uponthe outer end of shaft 9 is a disk cam 10 having a fiat portion 10 against which'normally rests an arm 11 piv oted at 11a on a block 11b fixed upon the side of beam 1m. A spring 11C connecting the upper end of arm '11 with the upright `1b normallyy urges arm 11 into contact with the said cam. A link 11l connects the upper end of arm 11V with the member 7al of the saw frame, said link being of such length that when arm 11 engages the flat portion 102L of cani 10 the saw frame will be so swung that saw 7 is moved out of the path of trough 6, as shown in full lines in Fig. 3, but when arm 11 engages the curved portion of cam 10 the saw frame will be moved to project saw 7 into the path-of trough 6 to saw off the end ,of the block A therein, as shown in dotted lines in Figs. 3 and 4.

At the other end of shaft9 is va disk crank 12 having eccentrically pivoted thereon one end of a link 13, said link having a slot 13 in its outer end adapted to receive a pin on the outer end of a rocker arm 5 fixed to rocker shaft.

The relation between the movements of saw 7 andshaft 5`is as follows: In the position shown in full vlines in Fig. 3, both saw 7 and shaft 5 are in normal positions, i. e., the saw frame is retracted and trough 6 is resting upon trough rest Ll. As shaft 9 rotates counter-clockwise, as shown by the arrows in Figs. 3 and 4, arm 11 rides up upon the curved portion of cam 10 as shown in Fig. 4. and link 111 projects the saw frame so as to move saw 7 into the path of trough 6 to cut off the end of block A. In the meantime crank disk 12 had rotated lthrough the same arc as cam 10 and the inner end of link 13'has been merely raised upwardly on the same side of shaft 9 and due to the slot 13 therein a dwell is provided whereby arm 5C remains uninoved until the saw 7 has been moved to cut off block A, as shown in Fig. 4. Saw 7 remains in projected position during the remaining portion of the rotation of shaft 9, while arm 5C is moved .by link 13 to raise trough 6 to dump the row of blocks A upon `the core 4board 3 as shown in dotted lines in Fig. 4, the end core block A during such tilting of trough 6 bears against the side of saw 7 which acts as a guide for the row of blocks during such dumping. At the end of each rotation of shaft9the arms 11 and 13 have reassumed their normal positions shown in full lines in Fig. 3.

The short length core blocks A of square or rectangular cross section are fed into lll) incassal trough/6 from hopper 14, Fig. v5, upon an endless belt 15 running over Apulleys 15a, 15b

which are driven by any suitable means` (not shown) and conveyed by belt 15 intothe end j of a channel 16 from whence the' blocks are pushed lin, axial alignment under a glue` spreading roller 17 of a regular stock gluey spreader. The blocks A, thus coated on their upper faces with glue,`pass out of trough 16 and into the trough 6 which is Vin axial alignment therewith, enough space being left between the adjacent ends of the troughs to permit operation of `saw 7 as above exiest 4 (Fig.2). Movement of trip 17 and rod 17a brings into operation the clutch mechanism, hereinafter explained, which causes cam sha-ft 9 to make one revolution to operate saw 7 cutting off the overhanging portion of the rearniost block A in trough 6, and latei' rocking shaft 5 to swing trough 6 upwardlyy and deposit the row of aligned blocks .A on the ,core board 8 kbeside and touching the next preceding row `of blocks thereon with the glue coated face of each row of blocks contacting with a face ofthe preceding row, as shownin Fig. 6.

The clutch mechanism is as follows:

Above and at right angles to cam shaft 9 Y and adjacent pulley 9? is a pipe 18 having `one end ,slidably resting uponthe beam 1y and pivotally connected at 18a to trip'rod 17, The other end of pipe-18 is pivo'tally connected as at 18"' to a ixedmember1.l on the side of the frame, whereby as trip rod 17a is shifted the pipe 18 will be swung horizontally towards or away from the pulley 9". On pipe 18 between the shaft 9 and rod 17a is a cont-act collar 19 held between a pin 18c and a collar 18d fixed to pipe 18by a screw or bolt 18 to prevent axial movement ofcollar 19 on pipe 18. Fixedly mounted on shaft 9 below pipe 18 and adjacent the hub of pulley 9b is a collarl 2O which is prevented from axial move-menton shaft 9 by a key 29a and set screw Q0". Extending longitudinally through collar 20 a stepped boie 20, 20d, parallel with and above the shaft 9, into which bore is fitted a bolt having a portion 20e slidably fitting the larger step 20C and having a reduced shank portion Q'O slidably. fitting the smaller step 2O"` ofv the bore. Aspring 2Og around the shank 2O! and interposed between the larger portion 20e of the bolt and the inner end of bore 2Oc normally tends to urge the bolt outwardly into contact with a clutch face 9X on the adjacent end of pulley/159".y

The shank port-ion QOf of the bolt extends beyond theopposite end of the collar 20 and `on `said shank adjacent the head 20h of the ',boltlis a vertically disposed plate 21 having a semi'circular groove 21a`in its lower edge adapted to 'seat upon and slidably engage the shaft 9.1"The upper end of plate 21 is adapted'to contact with pipe 18 to govern the sliding movement ofthe bolt 20e.

lVhen trip finger 17Vis at'the4 inner end of slot 6L (Fig. 2) the parts should be so adi justed that pipe '18 will maintain the plate 21 in such posit-ion that bolt 2Oe will not en* i gage the clutch face of 9X of the constantly rotating pulley 9b, and hence shaft9 will not be rotated. When however the trip 17 is moved lto the right (Fig. 2) pipe 18 will be also shifted to the right, andplate 21 following pipe 18 by the action of spring 20g will cause bolt 20e to be shifted to engage the clutch face 9x thereby causing shaft 9 to rotate with pulley 9b.

On collar 2O is a radial arm 20k disposed between the pipe 18 and pulley 9b which arm when rotating will not strike collar 19 ifthe pipe 18 is in normal position. Arm 20k (Fig. 8) is disposed below the collar 19 so that when pipe 18 is shifted towards pulley 9b and collar 2O starts to rotate in an anticlockwise direction, Varm 20k will not strike collar` 19 until just at the end of one complete rrevolution of shaft 9 at' which time the blocks A have been Vtransferred to the core board 3 and trip finger 17 is return to normal position.

The striking of .collar 19 by arm 20k at the end of the one rotation of shaft 9 restores pipe 18 and 'trip 17 to normal position, and-shaft? 9 ceases to rotate. l

The upper end of plate 21 is bent as at 21b so that same when rotating will not strike the collar 19 as such action would'defree to clutch bolt 20e before one complete rotation of shaft9.

In making veneei'ed doors (Fig. 10) all part-s except'tlie panels themselves are made up on these soft pine cores. Fig. 11 shows a section through a completed door stile in which three rows of soft pine core blocks A are used. In order to give a nishe'd apiearance to the outer edges 'I n'eferabl use D 3 et strips (l which extend the fulllength of the stile and are of the saine kind of wood as the veneer facing D. These stri ps C may be made on the machine, but are usually oneytire core boai'd'is conveyed to a stock and clamp machine where the core sections under air pressure are `properly clamped together with retaining clamps; and the cores are permitted to stand until the glue has properly set, then the core is dressed to size and- 1. In a core block laying-up'machine; a

core board; a trough mov-ably mounted adjacent the core board; means for feedingk aligned core blocks into the trough; and

p means for automatically moving the trough when filled to deposit the row of blocks upon the core board.

2. In combination with a machine as set forth in `claim 1; means for automatically cutting ofi' the overhanging portion of the bloc-ks at the inlet end of the trough before the trough is moved.

3. In a machine as set forth in claim 1, said trough moving means comprising a trip extending into the trough in the path of the blocks; a rocher shaft carrying said trough, and means actuated by the trip for rocking the rocker shaft.

4. In combination with a machine as set forth in claim 1; a trip extending into the trough in the path of the blocks; a saw swingably mounted across the inlet end of the trough; and means actuated by the trip for swinging the saw to cut off the overhanging portion of the blocks in said trough.

5. In combination with a machine as set forth in claim 1, a trip extending into the trough in the path of .said blocks; a rocker shaft carrying said trough; a saw swingably mounted across the inlet end of the trough; and meansfactuated by the trip for swinging the saw to cut olf the over-hanging portion of the blocks in said trough and for rocking the rocker shaft.

6. In a core block laying-up machine; a core board; a ytrough movably mounted adjacent the core board; means for rautomatically feeding aligned core blocks into the trough; and means for automatically moving the trough each time same is filled to deposit parallel rows of blocks upon the core board, the parallel rows contacting.

7. In combination with a machine as set forth Vin claim 6, means for automatically cutting off the overhanging portion of the blocks at the inlet end of the trough before the trough is moved.

8. In a machine as set forth in claim 6, said trough moving means comprising a trip extending into the trough in the path of the blocks; a rocker shaft carrying said trough, and means actuated by the trip for rocking the rocker shaft.

9. In combination with a machine as set forth in claim 6, a trip extending into the trough in the path of the blocks; a ysaw swingably mounted across the inlet end of the trough; and means actuated by the trip for swinging the saw t0 cut off the overhanging portion of the blocks in said trough.

10. In combination with amachine as set forth in claim 6, a trip extending into the trough in 'thepath of said blocks; a rocker shaft carrying said trough; `a saw swingably mounted across the inlet end of the trough; and means actuated by the trip for. lswinging the saw to cut off the overhanging portion of the blocks in said trough, and for rocking the rocker shaft.

11. In a core block laying-up machine; a core board; a trough movably mounted adjacent the core board; means for feeding aligned core blocks having their upper .faces coated with adhesive into the trough; and means for automatically moving the trough each time same is filled to deposit parallel rows of blocks upon the core board, the adhesive coated face of each row contacting with a face of the preceding row.

12. In combination with a machine as set forth in claim l1, means for automatically cutting off the overhanging portion of the blocks -at the inlet end of said trough before the trough is moved. l

13. In a machine as set forth in claim 1l, said trough moving means comprising a trip extending into the trough in the path of the blocks; a rocker shaft carrying said trough; and means actuated by the `trip for rocking the rocker shaft.

14. In combination with a machine as set forth in claim 11, a trip extending into the trough in the path of the blocks; a saw swingably mounted across the inlet end of the trough; and means actuated by the trip for swinging the saw to cut off the overhanging portion of the blocks in said trough.

15. In combination with a machine as set forth in claim 11, a trip extending into the trough in the path of said blocks, a rocker shaft carrying said trough; a saw swingably mounted across the inlet end of the trough, and means actuated by the trip for swinging the saw to cut oif the overhanging portion of the blocks in said trough, and for rocking the rocker shaft.

1G. In a core block laying-up machine; a core board; a trough movably mounted adjacent the core board; means for feeding aligned core blocks having their upper faces coated vwith adhesive into the trough; means for automatically cutting off the overhanging portion of the row of blocks and moving the trough each time same is.tilled to deposit parallel rows of blocks upon the core board; the adhesive coated face of each row contacting with a face of the preceding row.

17. In a machine as set forth in claim 16, said trough moving means comprising a trip extending into the trough in the path of the blocks; a rocker yshaft carrying said trough; and means actuated by the trip for rocking the rocker shaft,

18. In a machine as set forth in claimvl, a trip extending intothe trough in the path of the blocks; and said automatic cutting off means comprisinga frame swingably mounted across the inlet end of the trough; a saw carried by said frame; and means actuated by the/trip for swinging the frame to cause the saw to cut off the overhanging portion of the row of blocks.

19. In a machine as set forth in claim 16, a trip extending into the trough in the path of said blocks, and said automatic cutting off and moving means comprising a rocker shaft carrying said trough; a frame swingably mounted across the inlety end of the trough, a saw carriedl by said frame; and means actuated by the trip'for swinging the frame to'cause the saw to cut off they overhanging portion of the row of blocks and for rocking the rocker shaft. Y `v 20. In a core block laying-up machine; a frame; a core board removably mounted on said frame; a tiltable Core block trough mounted in the frame vadjacent the core board; a trip adjacent the outer end of the trough in the path of the blocks; means for feeding aligned core blocks into the trough towards the trip; and means whereby each time the trip is actuated the trough will be automatically tilted to deposit parallel rows of blocks upon the core board, the rows contactinox 21. In combination with a machine as set forth in claim 20, means for cutting off the overhanging portions of the blocks in the trough before the trough is tilted.

22. In combination with a machine as set forth in claim 20, a frame swingably mounted across the inlet end of the trough; a. saw carried by said frame; and means actuated by the trip for swinging the frame to cause the saw to cut off the overhanging portion j of the blocks in said trough.

23. In combination with a machine as set forth 1n claim 20, a rocker shaft carrying said trough; a frame snfingably mounted `across the inlet end of the trough, a saw carried by said frame; and means actuated by the trip for swinging the frame to cause the saw to cut off the overhanging portion of the blocks in said trough and for rocking the rocker shaft. j

24. In a core block laying-up machine; a frame; a core-board removably mounted on said frame; a tiltable core block trough mounted in the frame adjacent the core board; a trip adjacent the outer end of the trough in the path of the blocks; means for feeding aligned core blocks having their up- Aper faces coated with adhesive into the trough towards the trip and means whereby each time the trip is actuated the overhanging portions of the blocks in the trough will be automatically cut olf and the trough 'will be automatically tilted to degrees todeposit parallel rows of blocks upon the core board, theadhesive coatedv face of each row contacting with a face of the preceding row. i 25. In a machine as .set forth in claim 2l, said automatic cut off means comprising a frame swingably mounted across the inlet end of the trough; a saw carried by said frame; and means actuated by the trip for swinging the frame to cause the saw to cut off the over-hanging portion of the blocks in the trough.

2G. In combination with a machine as set forth in claim 24, said cnt off and tilting means comprising a rocker shaft carrying said trough; a frame swingably mounted across the inlet end of the trough, a saw carried by said frame; and means actuated by the trip for swinging the frame to cause the saw to cut off the overhanging portion of the blocks in the trough and for rocking the rocker shaft.

27. In a vcore block laying-up machine, a frame, a core board; arocker shaft; a trough carried by said rocker shaft and adapted when rocked to overlie said board; a pivoted saw frame at the inlet end of said trough; a rotatable saw journalled therein; a power shaft rotating the saw; a cam shaftya loose pulley on the cam shaft driven from the 'power shaft; a disk cam on said cam shaft having a flat portion normally engaging the saw frame; a crank on said cam shaft; a lever on said rocker shaft; a link connecting the lever and crank; means for automati cally feeding aligned .core blocks into the trough; a trip extending into the trough; and clutch means whereby when the trip is actuated the pulley will be automatically locked to the cam shaft for one revolution to rock the saw and'trough.V

28. In a machine as set .forth in claim 27, ythe sawframe normally engaging the flat portion of the disk cam; the connection be tween the crank and link being disposed below and at the opposite side of the cam shaft from said flat portion; and the connection between the link and rocker shaft lever being slotted, whereby as the cam shaft is revolved thersaw will be first projected and then the rocker shaft rocked, the saw remaining projectedfuntil the end of the revo lution, for the purpose specified. Y

29. In a machine as set forth in claim 27, said pulley having a clutch face on its hub; and said clutch means comprising a collar fixed on said cam shaft adjacent the pulley; a slidable bolt in said collar; spring means for normally urging the bolt into engagement with the pulley clutch face; an arm swingably mounted above the collar; a contact member on said arm; a plate on said sliding bolt normally engaging said arm to limit the sliding movement of the bolt; a link connecting the arm with said trip whereby as the trip is actuated the arm WillV be swung towards the pulley; and a, striking 5 member on said collar normally disposed` intermediate the arm and pulley and ada-pted to strike the Contact member onthe arm HAROLD L. BRANDAU. 

